1,1

No more terms with n < 3000. [Vincenzo Librandi Jan 02 2014]

Table of n, a(n) for n=1..4.

Select[Table[3^n + 10^n, {n, 0, 1500}], PrimeQ] (* Vincenzo Librandi Jan 02 2014 *)

(MAGMA) [a: n in [0..1500] | IsPrime(a) where a is 3^n+10^n];

Sequence in context: A264621 A245806 A192204 * A258916 A052444 A277463

Adjacent sequences: A176929 A176930 A176931 * A176933 A176934 A176935

nonn

Vincenzo Librandi, Apr 29 2010

approved